Caracterización de partículas metálicas de e-waste

Abstract

In this work is show the characterization of electronic waste (e-waste) was carried out from the industrial sector through; particle size distribution, scanning electron microscopy (SEM-EDS) and optical emission spectrometry with induced plasma coupling (ICP). Granulometric analysis it was performed using Tyler sieves series, the results allow to classify the sample of e-waste in six batches of different sizes (M16: +1180 mm, M20: -1180 +850 mm, M35: -850 +500 mm, M45: -500 +335 mm, M60: -335 +250 mm, Pan: -250 mm) showing the highest proportion by weight (33.8 %) in the mesh # 35 (-850 +500 mm). The results determined by ICP for mesh # 35 showed 0.055, 0.025 y 0.003 % wt Ag, Au and Pt respectively. The results obtained by quantitative microanalysis (SEM-EDS) indicated the highest concentration of Ag, Au and Pt for meshes # 60, # 35 and # 20. It has been determined that the recovery of these metals by electrochemical means is feasible.